{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["material", "manufacturing process", "enabling technology", "process characterization", "machine or equipment", "process parameter"], "input": "This article reviews the looming research on WAAM techniques and the commonly used metallic feedstock materials ."}
{"material": ["metallic", "feedstock materials"], "manufacturing process": ["WAAM"], "enabling technology": [], "process characterization": [], "machine or equipment": [], "process parameter": []}